<template>
  <form action="/">
    <van-search
        v-model="searchText"
        show-action
        placeholder="请输入要搜索的标签"
        action-text="清空"
        @search="onSearch"
        @cancel="onCancel"
    />
  </form>

  <van-divider content-position="left">已选标签</van-divider>
  <div v-if="activeIds.length===0">请选择标签</div>
  <van-row gutter="16">
    <van-col v-for="tag in activeIds">
      <van-tag closeable size="small" type="primary" @close="doClose(tag)" >
      {{tag}}
      </van-tag>
    </van-col>

  </van-row>


  <van-divider content-position="left" >选择标签</van-divider>
    <van-tree-select
        v-model:active-id="activeIds"
        v-model:main-active-index="activeIndex"
        :items="tagList"
    />
<div style="padding: 12px">
  <van-button block type="primary" @click="doSearchResult" style="border-radius: 12px">搜索</van-button>
</div>

</template>
<script setup>
import {ref} from 'vue';
import {useRouter} from "vue-router";

const router= useRouter();
const searchText = ref('');
const originTagList= [{
      text: '性别',
      children: [
        { text: '男', id: '男' },
        { text: '女', id: '女' },
      ],
    },
    {
      text: '年级',
      children: [
        { text: '大一', id: '大一' },
        { text: '大二', id: '大二' },
        { text: '大三', id: '大三' },
        { text: '大3', id: '大3' },
        { text: '大4', id: '大4' },
        { text: '大5', id: '大5' },
      ],
    },
]
let tagList = ref(originTagList)
const onSearch = (val) => {
  tagList.value=originTagList.map(parentTag=>
      {
        const tempChildren=[...parentTag.children];
        const tempParentTag={...parentTag}
        tempParentTag.children= tempChildren.filter(item => item.text.includes(searchText.value));
        return tempParentTag;
      })
}
const onCancel = () => {
  searchText.value = '';
  tagList.value=originTagList;
}
const activeIds = ref([]);
const activeIndex = ref(0);


const doClose = (tag) =>{
  activeIds.value=activeIds.value.filter(item=>{
    return item!==tag;
  })
}
//执行搜索后
const doSearchResult=()=>{
  router.push({
    path:'/user/list',
    query:{
      tags:activeIds.value
    }
  })
}

</script>
<style scoped>

</style>